Corner and jamb tile



F. HEATH.

CORNER AND JAMB TILE.

APPLICATION FILED MAY I. 1918 1,403,953.

Patented Jan. 17, 1922. l

FfrI-DEIPIC IQ 22 771 ATTORNEySZ PATENT OFFICE.

FREDERICK HEATH, OF TACOMA, WAS HINGTON.

CORNER AND J'AMB TILE.

Specification of Letters Patent.

Patented 212111.17, 1922.

Application filed May 1, 1918. Serial No 231,838.

1 '0 all whom it may concern:

Be it known that I, FREDERICK HEATH, a

. citizen of the United States, and a resident of Tacoma, in the county of Pierce and State of \Vashington, have made certain new and useful Improvements in Corner and J amb Tiles, of which the following is a specification.

My present invention relates generally to building blocks, and more particularly to corner and jamb tiles, my object being the provision of a tile having especial advantages on account of its simplicity and many uses.

The corner and jamb block or tile provided by this invention consists of a composite group of elements each having a longitudinal void and the elements being defined by intermediate narrow slot like voids along which the block may be divided into its elements. The block formed is intended to be set with the voids running vertically, it is so proportioned as to close horizontal courses of hollow tile construction to complete wall corners andjambs, it is so arranged that in alternate courses, it may lie in angular or reverse position so that portions of the corner and jamb block overlap and bond into the wall,-while completing an alignment of webs and shells with an element or elements of the corner and jamb block above and below. The thickness of the corner and jamb block is determined with relation to its length and to the wall blocks so that the running bond of the wall blocks in the horizontal courses is not disturbed, and the use of fillers at the corners and jambs, as is now common, is obviated.

In the manufacture and use of such hollow tile, it is essential that the block may be readily divided by a blow of the trowel or hammer to separate the block into its elements without destroying the ware or impairing the use of the separated parts in the wall. In the methods heretofore known of scoring and notching of blocks for the purpose of breaking them into sections, the following .difliculties have been encountered. If sharp .grooves are formed along the exterior of the blocks, these grooves result in.

the starting of cracks during the burning of the ware 1n the kilns and in the frequent warping and separationof the blocks, with a result that a very large percentage of the blocks is useless and this waste offers a prohibitory expense for theuse of such blocks as building material. If such scores be of smooth or'rounded character, the exterior appearance of the block in the wall precludes using such a block for an outside finlsh. Furthermore, such scores are not eflect-ive in materially facilitating the breakingof the block. I

t is an object of the present invention to provide such a block which may be manufactured by the effective method of continuous extrusion of a column of clay and which is divisible into its elements by reason of a narrow slot-like void between the elements so arranged and proportioned that the loss due to cracking resulting from heat treatment in the kilns is almost entirely eliminated. The block may be used as,a whole without ofiering any weaknesses in the wall and may be handled both before and after burning without danger of breakage and may present the desired exterior appearance and yet be very readily di ided by the use of a masons trowel or hammer. he method and manner of accomplishing these objects is made apparent in the following description and the novel characteristics are summarized in the claims. In the accompanying drawings illustrat- 1n my present invention igure 1 1s a perspective view illnstrating the use of my invention as a corner tile;

Figures 2 and 3 are plan views of the tile in alternate courses, one reverse with respect to the other.

F igure 4 is a detailed perspective view of my improved tile;

Figures 5 and 6 are sectional plans along opposite courses of the wall showing the tile used to form a recess-for the reception of a window frame in an 8 inch wall.

Figures 7 and 8 are similar plans showing the use of the tile in connection with the formation of a window frame receiving recess in a 12 inch wall and,

Figure 9 is a sectional plan showing the whole tile set on the j amb side and forming and leaving a 4 inch recess for the frame.

Referring now to these figures, and particularly to detailed Figure 4, my invention roposes a tile generally indicated at 10,

avlng five (5) voids 11, 12, 13, 14 and 15, of which the voids 11, 13 and 15 are in parallel spaced relation, and preferably square in cross section. The-voids 12 and 14 occur between the voids 11, '13 and 15, void 12 being between the voids 1.1 and 13, and void these voids 12 and 14 are very carefully proportioned with relation to the rest of the block. It will be noted that the width of these voids is approximately one half of the thickness of the walls of each element around the voids 11, 13 and 15. To avoid the sharp corners, the narrow voids are extended toward the outer sides of the block a distance approximately one half waythrough the normal wall of the block, leaving the bridging portion across the ends of the slot-like voids about one half of the thickness of the walls ofthe elements. These voids 12 and 14, it will be noted, are approximately rectangular and they may be formed as the clay is extruded from the die in acolumn, subsequently severed into the short lengths forming the complete blocks, thus facilitating rapid manufacture. The complete block presents no sharp edges or grooves of a character likely to start cracks during the heat treatment in the kilns. It will also be noted that the wall portion opposite these voids 12 and 14 affords a strip approximately equal to the width of the void along which it may be struck with the edge of the trowel or masons hammer. Practice has demonstrated that this permits easy breaking of the block and yet the block when broken is very strong Where strength is required. If such blocks have a narrow V groove either inside or outside the block it must be struck very accurately, and it thus. requires considerable skill to successfully break blocks of the character heretofore made divisible by such methods. I

From an inspection of Fig. 4 and other figures, it will be notedthat the composite block forms a series of square tubular sections having walls of material thickness, the sections being defined intermediately by the voids 12 and 14. These v0ids 12 and 14 are preferably of a width corresponding to a normal vertical mortar joint so that when the blocks are placed in the position shown in Figs. 5 to 9 inclusive, the walls of the sections are in alignment with similar walls As set end-wise in connection with the corner structure, the closed sides of the tile voids of hollow wall blocks, and by reversal v in alternate courses the regular wall blocks will be overlapped so as to form a bonded and finished corner andv obviate the necessity for odd lengths of wall blocks for fillers, as is now the common practice' It is equally obvious that in alternate courses a full block 10 and a single section 16 thereof may be utilized to form recesses receiving a Window frame 17, as in Figures 5 and 6, in connection with a 5:} inch frame recess within an 8 inch wall.

It is equally obvious from an inspection of Figures 7 and 8, that a full block 10 and a single section '16 may be usedxin alternate courses with a 2 section tile portion 18, as

in Figure 8, for forming a 6%; inch recess in a 12 inch wall.

It is equally obvious that the full tile may be used on the jamb side as indicated in Figure 9 to form a 4 inch recess for the reception of a frame 19.

It is of course to be understood that as set in the wall, two-thirds of the corner tile will be bedded between the flat surfaces of the' overlapping wall blocks, which form upper and lower beds of mortar on fiat surfaces and insure strength, enabling jambs, piers and corners to be constructed as strong as the body of the wall. and doing away with the commonly used end-to-end laying in like places.

I claim 1. A building tile consisting of a plurality of hollow rectangular sections, the four walls of each section being substantially equal in thickness and there being a narrow rectangular void between adjacent sections extending for its full width on each side to a plane materially nearer the adjacent outer side of the rectangular block than the adjacent inner surfaces of said sections, thus providing a weakened portion of such a width that the block maybe readilysevered by a blow of a trowel or masons, hammer.

2. A corner and jamb tile consisting of a plurality of hollow square sections each havin its four walls of substantially equal thlckness. the adjacent Walls of the sections being separated intermediately and joined at their outer edges, the joining being in the nature of integral connecting bridge members,the outer sides of which are flush with the outer surface of the blocks andthe inner sides of which are substantially parallel' therewith, the transverse thickness of the bridge members being approximately onehalf the thickness of the sides of the square sections, whereby a weakened portion is provided along which the block may be divided by a blow on the outer sides of such bridge like connections.

FREDERICK HEATH. 

